Doctopus is the must have Google Sheets add-on for teachers. It allows teachers to set up a class folder structure within Google Drive, so that documents can easily be shared. Think of Doctopus as your replacement for the copy machine. Instead of taking that reading log template to the copy machine, making 25 copies, and then handing one to each student...Doctopus allows you to share that reading log electronically and provides you with access to each student's copy so that you can see their progress on it ANY time you choose.
Check out YouTube for a video on using Doctopus to create classes for more information.